190 lines
5.1 KiB
PHP
190 lines
5.1 KiB
PHP
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<?php
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/**
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* Functions concerned with viewing queries, and is used for debugging.
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*
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* Simple Machines Forum (SMF)
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*
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* @package SMF
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* @author Simple Machines https://www.simplemachines.org
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* @copyright 2022 Simple Machines and individual contributors
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* @license https://www.simplemachines.org/about/smf/license.php BSD
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*
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* @version 2.1.0
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*/
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if (!defined('SMF'))
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die('No direct access...');
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/**
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* Show the database queries for debugging
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* What this does:
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* - Toggles the session variable 'view_queries'.
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* - Views a list of queries and analyzes them.
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* - Requires the admin_forum permission.
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* - Is accessed via ?action=viewquery.
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* - Strings in this function have not been internationalized.
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*/
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function ViewQuery()
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{
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global $scripturl, $settings, $context, $db_connection, $boarddir, $smcFunc, $txt, $db_show_debug;
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// We should have debug mode enabled, as well as something to display!
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if (!isset($db_show_debug) || $db_show_debug !== true || !isset($_SESSION['debug']))
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fatal_lang_error('no_access', false);
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// Don't allow except for administrators.
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isAllowedTo('admin_forum');
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// If we're just hiding/showing, do it now.
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if (isset($_REQUEST['sa']) && $_REQUEST['sa'] == 'hide')
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{
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$_SESSION['view_queries'] = $_SESSION['view_queries'] == 1 ? 0 : 1;
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if (strpos($_SESSION['old_url'], 'action=viewquery') !== false)
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redirectexit();
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else
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redirectexit($_SESSION['old_url']);
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}
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call_integration_hook('integrate_egg_nog');
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$query_id = isset($_REQUEST['qq']) ? (int) $_REQUEST['qq'] - 1 : -1;
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echo '<!DOCTYPE html>
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<html', $context['right_to_left'] ? ' dir="rtl"' : '', '>
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<head>
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<title>', $context['forum_name_html_safe'], '</title>
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<link rel="stylesheet" href="', $settings['theme_url'], '/css/index', $context['theme_variant'], '.css?alp21">
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<style>
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body
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{
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margin: 1ex;
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}
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body, td, th, .normaltext
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{
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font-size: x-small;
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}
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.smalltext
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{
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font-size: xx-small;
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}
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</style>
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</head>
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<body id="help_popup">
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<div class="tborder windowbg description">';
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foreach ($_SESSION['debug'] as $q => $query_data)
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{
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// Fix the indentation....
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$query_data['q'] = ltrim(str_replace("\r", '', $query_data['q']), "\n");
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$query = explode("\n", $query_data['q']);
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$min_indent = 0;
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foreach ($query as $line)
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{
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preg_match('/^(\t*)/', $line, $temp);
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if (strlen($temp[0]) < $min_indent || $min_indent == 0)
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$min_indent = strlen($temp[0]);
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}
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foreach ($query as $l => $dummy)
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$query[$l] = substr($dummy, $min_indent);
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$query_data['q'] = implode("\n", $query);
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// Make the filenames look a bit better.
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if (isset($query_data['f']))
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$query_data['f'] = preg_replace('~^' . preg_quote($boarddir, '~') . '~', '...', $query_data['f']);
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$is_select_query = substr(trim($query_data['q']), 0, 6) == 'SELECT' || substr(trim($query_data['q']), 0, 4) == 'WITH';
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if ($is_select_query)
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$select = $query_data['q'];
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elseif (preg_match('~^INSERT(?: IGNORE)? INTO \w+(?:\s+\([^)]+\))?\s+(SELECT .+)$~s', trim($query_data['q']), $matches) != 0)
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{
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$is_select_query = true;
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$select = $matches[1];
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}
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elseif (preg_match('~^CREATE TEMPORARY TABLE .+?(SELECT .+)$~s', trim($query_data['q']), $matches) != 0)
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{
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$is_select_query = true;
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$select = $matches[1];
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}
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// Temporary tables created in earlier queries are not explainable.
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if ($is_select_query)
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{
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foreach (array('log_topics_unread', 'topics_posted_in', 'tmp_log_search_topics', 'tmp_log_search_messages') as $tmp)
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if (strpos($select, $tmp) !== false)
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{
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$is_select_query = false;
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break;
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}
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}
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echo '
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<div id="qq', $q, '" style="margin-bottom: 2ex;">
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<a', $is_select_query ? ' href="' . $scripturl . '?action=viewquery;qq=' . ($q + 1) . '#qq' . $q . '"' : '', ' style="font-weight: bold; text-decoration: none;">
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', nl2br(str_replace("\t", ' ', $smcFunc['htmlspecialchars']($query_data['q']))), '
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</a><br>';
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if (!empty($query_data['f']) && !empty($query_data['l']))
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echo sprintf($txt['debug_query_in_line'], $query_data['f'], $query_data['l']);
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if (isset($query_data['s'], $query_data['t']) && isset($txt['debug_query_which_took_at']))
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echo sprintf($txt['debug_query_which_took_at'], round($query_data['t'], 8), round($query_data['s'], 8));
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else
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echo sprintf($txt['debug_query_which_took'], round($query_data['t'], 8));
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echo '
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</div>';
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// Explain the query.
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if ($query_id == $q && $is_select_query)
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{
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$result = $smcFunc['db_query']('', '
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EXPLAIN ' . ($smcFunc['db_title'] === POSTGRE_TITLE ? 'ANALYZE ' : '') . $select,
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array(
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)
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);
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if ($result === false)
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{
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echo '
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<table>
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<tr><td>', $smcFunc['db_error']($db_connection), '</td></tr>
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</table>';
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continue;
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}
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echo '
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<table>';
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$row = $smcFunc['db_fetch_assoc']($result);
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echo '
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<tr>
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<th>' . implode('</th>
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<th>', array_keys($row)) . '</th>
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</tr>';
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$smcFunc['db_data_seek']($result, 0);
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while ($row = $smcFunc['db_fetch_assoc']($result))
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{
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echo '
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<tr>
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<td>' . implode('</td>
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<td>', $row) . '</td>
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</tr>';
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}
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$smcFunc['db_free_result']($result);
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echo '
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</table>';
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}
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}
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echo '
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</div>
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</body>
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</html>';
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obExit(false);
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}
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?>
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